<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style>
			* {
				margin: 0;
				padding: 0;
			}
			li {
				list-style: none;
			}
			.box {
				width: 1226px;
				height: 285px;
				background-color: pink;
				margin: 0 auto;
			}
			ul li {
				width: 296px;
				height: 285px;
				background-color: plum;
				float: left;
				margin-right: 14px;
			}
			.last {
				/*注意一下权重*/
				margin-right:0px ;
			}
			li:hover {
				/*盒子阴影*/
				box-shadow: 10px 10px 10px 10px rgba(0,0,0,0.3);
			}
		</style>
	</head>
	<body>
		<div class="box">
			<ul>
				<li>1</li>
				<li>2</li>
				<li>3</li>
				<li class="last">4</li>
			</ul>
		</div>
	</body>
</html>
